Grain grinder housing



FIG. 1 is a side elevation of an grain grinder housing showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an end elevation of the housing of FIG. 1 taken from the left side of FIG. 1; and

FIG. 4 is another end elevation of the housing of FIG. 1 taken from the right side of FIG. 1. 

The ornamental design for grain grinder housing, as shown. 